Answer:
7 seconds
Step-by-step explanation:
Distance of the coin above the water is modeled by the equation
[tex]y=-16x^2+96x+112[/tex]
where [tex]x[/tex] is time taken to cover the distance
Now equating with zero.
[tex]0=-16x^2+96x+112\\\Rightarrow 16x^2-96x-112=0\\\Rightarrow x=\dfrac{-\left(-96\right)\pm \sqrt{\left(-96\right)^2-4\times \:16\left(-112\right)}}{2\times \:16}\\\Rightarrow x=7, -1[/tex]
So, time taken by the coin to hit the water is 7 seconds.
Is the relationship linear, exponential, or neither?
Choose one answer.
Answer:
Linear
Step-by-step explanation:
Both top and bottom are going up at a constant rate
x is going up by 9 and
y is going up by 7
which inequality shows the relationship between the plotted points on the number line
Answer:
I hope this help you!!! if it doesn't im sorry
I need help converting 3/5 into a decimal
Answer:
0.6
Step-by-step explanation:
oki so to make it easier, you can convert 3/5 to 60/100
60 out of 100 is 0.6
Hope this helps! :D
You have $4.10 and would like to buy some almonds .if a pond costs $8, how many ounces can you buy ?
Answer:
well- you cant buy any pounds-
Step-by-step explanation:
Equation 1:
X-3 = 2-4x
Which of these have the same solution as Equation 1?
Explain your reasoning.
Equation A:
2x-6 = 4-8x
Equation B:
X-5 = -4x
I
Equation C
2(1-2x) = x-3
Equation D:
-3 = 2-5x
Answer:
since equation 1 says that X= 1
any other equation saying x=1 will be valid!
Equation A
Equation B
Equation C
Equation D
all correct
PLEASE HELP I WILL GIVE BRAINLIEST!!!
5. find the measure of each indicated angle show your work
Answer: a=126, b=134, c= 110, d=146, e=46
Step-by-step explanation:
so for a you take 180-54 and that gives you A
for b you take 33,70,and A(126) and add them together then subtratct by 360 and you get b for d you take 180-33 and get 146 for c you take 180-70 and get 110 and for e you take 180 - 134(B) and you get tha answer to e
Which choices are common factors of the numerator and denominator of the
fraction below? Check all that apply.
6/24
A.2
B.12
C.3
D.4
E.1
F.6
I need help guys
Answer:
2, 3, 6, 1
Step-by-step explanation:
common factors of 6 are 1, 2, 3, 6
common factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24
so both 6 and 24 have common factors of 1, 2, 3, 6
(4/52) x (3/51) =================
Answer:
Step-by-step explanation:
4/52 times 3/51=1/221
H(x)= -x^2+8 use (-6)
Answer:
H=44
Step-by-step explanation:
−(−62)+8=−(−36)+8=36+8=44
Answer:
-28
Step-by-step explanation:
-x^2+8
-(-6)^2 + 8 (-6 to the 2 power)
-36 + 8
-28
"The Kid Laroi"- Rapper-Songwriter
can someone help me please
Answer:
14c + 21d - 42
Step-by-step explanation:
Write the equation of the exponential function using two points. (-3,8)(0,1)
Answer:
m= −7/3
(x1,y1)=(−3,8)
(x2,y2)=(0,1)
Use the slope formula:
m=
y2−y1
x2−x1
=
1−8
0−−3
=
−7
3
=
−7
3
You have $4.10 and would like to buy some almonds .if a pond costs $8, how many ounces can you buy ?
Answer:
Step-by-step explanation:
we know that 1 lb=16oz
16 oz almonds = costs 8 dollars , we divide the cost to oz
8/16=0.5 dollars / oz
4.10/0.5=8.2 oz
for 4.10 dollars you buy 8.2 oz
which equation is parallel to the line y= -5/7x - 7
Answer:
5x + 7y = -42
Step-by-step explanation:
This question will be a little easier to answer if we change the form of the original equation from slope intercept to standard form:
[tex]y=(-5/7)x-7\\(5/7)x+y=-7\\5x+7y=-49[/tex]
All parallel lines have the same slope, but what does that mean when our equation's in standard form. Well, slope only depends on the coefficients of the x and y terms, so any equation of a line in standard form with 5x + 7y on the left side will be parallel to the one in the problem. Looking through the possible choices, B. 5x + 7y = -42 is the only one that works.
Using desmos to check our work, we can see that the two lines are actually parallel!
The angle of elevation to an airplane viewed from the control tower at an airport is 15°. The tower is 100 feet high and Pilot Cory reports that the altitude of the airplane is 5100 feet (5000 feet higher than the control tower). How far away (ground distance) from the control tower is the airplane?
Answer:
Given: Angle of elevation 15°AB (height of tower)=100AE=?CE = 5100 (5000 feet heigher than the tower)Now,
tan15°=
[tex] \frac{5100}{ae} [/tex]
ae=
[tex] \frac{5100}{tan15} [/tex]
.: ae = 19033.45
.: the aeroplane is 19033.45 m away from the control tower.
A)
lo
Absolute value of 8/7,-8/7
Answer:
8/7, 8/7
Step-by-step explanation:
Cedric lives in an apartment and pays the following expenses each month: electric bill, $33.90; TV streaming service, $24.99; and rent, $538.95. Estimate his total expenses for the month by first rounding each value to the nearest tens place.
Answer:
Chyba 600,90zł
Step-by-step explanation:
Which situation is modeled by the graph? PLEASE HELP!
Answer:
Height of jump rope used over time.
Step-by-step explanation:The Height is stable and even so not an elevator as it goes to multiple floors not just one and is not used frequently after the same amount of time.Not the rest for the same reason.Jump rope as it can be uniform in height and time unlike the rest.
Pls help this is due in 15 minutes I’ll brainlest for the right answer
- increase
because 80 is greater than 50.
50 - 80
----------- = 30/50 = 0.6
50
answer:
- the change is an increase by 60%
Answer:
increase of 60%
Step-by-step explanation
The change from 50 to 80 is an increase of 30
To calculate percentage increase
[tex]\frac{change}{original}[/tex] × 100%
= [tex]\frac{30}{50}[/tex] × 100%
= 60% increase
A leaf is falling from the top of a tree. The height of the leaf in feet, y, can be found using the function y = -3.5x + 28, where x is the time in seconds the leaf has been in the air. How many seconds did it take the leaf to reach the ground?
Answer:
It took 8 seconds for the leaf to reach the ground.
Step-by-step explanation:
The height of the leaf in feet can be found using the function:
y = -3.5*x + 28
where x is the time in seconds the leaf has been in the air.
You want to know how long it took for the blade to reach the ground. That is, the time it took for the blade to reach a height of 0 feet. So, replacing this value in the expression:
0= -3.5*x + 28
and solving you get:
-28= -3.5*x
(-28)÷ (-3.5)=x
8=x
It took 8 seconds for the leaf to reach the ground.
HELP MIDDLE SCHOOL QUESTION
Answer:
Step-by-step explanation:
21/25
i just had this question a couple days ago lol
Answer:
thx for the points thats what you get for not answering my question properly and stealing points
Step-by-step explanation:
Simplify the expression (10x + 12 - 3x) by combining like terms.
Answer:
7x+12
Step-by-step explanation:
You do 10x-3x since they both have the x variable they can be combined to make 7x and the 12 is left alone.
Answer:
7x + 12
Step-by-step explanation:
irs gonna go like
10x -3x =7x
and the answer is
7x+12
What is the slope of the equation y- 5 = -3x?
Answer:
-3
Step-by-step explanation:
y=mx+b
m is slope
Answer:
-3 would be the correct answer
Please help im not smart at all lol
Answer:
1/2 ( 10x + 8 )
Step-by-step explanation:
first make sure everything in the parenthesis is addition. by doing this you make the 6 and 8x negatives. so it's 1/2 ( 13x + 5x + -6 + -8 + 14 ) then combine the numbers with the variable x so 13x + 5x + -8x = 10x . then the ones without variables -6 + 14 = 8. so 1/2 ( 10x + 8)
A 3-foot-wide wood deck will be built around a rectangular-shaped pool that measures 15 feet by 30 feet. The resulting shape is also rectangular. If the lumber costs $10 per square yard, If the lumber costs 10 dollars per square yard, what is the cost of the wood for the deck?
Answer:
$340
Step-by-step explanation:
We are told that the pool measures 15 feet by 30 feet,
Since the cost of the wood around it is per yards, let's convert this measurement to yards.
15 ft = 5 yards
30 ft = 10 yards
The deck is 3 ft wide. Converting to yards it is 1 yard.
Since the deck is round the pool, it means when we add it to the pool dimensions, we now have a dimension of; width: 7 yards by length: 12 yards
Thus, total area of pool and deck is;
A_t = 7 × 12 = 84 Sq.yds
Area of only pool is;
A_p = 5 × 10 = 50 Sq.yds
Finally, area of the deck will be;
A_d = 84 Sq.yds - 50 Sq.yds = 34 Sq.yds
We are told that the costs of the wood is $10 per Sq.yds
Thus, total cost is;
C = 10 × 34
C = $340
Find the solution for the system of the equation c=-t+2 and c=-4t-4
Answer:it’s a I think
Step-by-step explanation:
The difference of ten and a number
Answer:
Difference is the result of subtracting one number from another. ... So, difference is what is left of one number when subtracted from another. In a subtraction equation, there are three parts: The minuend (the number being subtracted from) The subtrahend (the number being subtracted)
Step-by-step explanation:
pls ANSWER if you actually know the answer
Answer:
The rate's aren't equivalent.
Step-by-step explanation:
If you find a common number of hours between the two expressions such as 24 hours you will see that the pay isn't the same. $24 for 6 hours of work ($4:1hr) can be turned into $96 for 24 hours of work and $36 hours for 8 hours of work ($4.5:1) turns into $108 for 24 hours of work.
What is area of circle that has circumference of 12pi
Answer:
36pi
Step-by-step explanation:
Since the formula for the circumference is C=2*pi*r
12pi=2*pi*r we can divide and get r=6 cm
Then, we can use the formula for the area of a circle: Area=pi*r^2 and get Area=pi*6^2=36*pi.
Frank is going to plant y vegetable seeds in one garden and 2y + 10 vegetable seeds in another.
How many seeds is Frank going to plant?
Frank is going to plant blank seeds.
Answer:
[tex] 3y + 10 [/tex]
Step-by-step explanation:
The total number of seeds Frank will plant in both gardens all together would be:
[tex] y + 2y + 10 [/tex]
Add like terms together to simplify the expression
[tex] 3y + 10 [/tex]
Frank is going to plant [tex] 3y + 10 [/tex] seeds
There are 26 letters in the English language and 24 in Korean. What is the ratio
Answer:
26:24
Step-by-step explanation:
is this what you mean
Answer:
Well the ratio fro English to Korean is
13:12 (simplified)
the ratio for Korean to English is
12:13 (simplified)
